Gilman Illinois Climate Data

Monthly Average Climate Data for Gilman Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.8 °C0.2 °C56.9 mm
February-7.1 °C2.7 °C49.02 mm
March-1.8 °C9.4 °C65.53 mm
April3.8 °C16.9 °C96.77 mm
May10.3 °C23.1 °C114.05 mm
June15.7 °C27.9 °C117.6 mm
July17.6 °C29.3 °C112.78 mm
August16.3 °C28.4 °C92.2 mm
September11.8 °C25.8 °C77.72 mm
October5.6 °C18.7 °C83.82 mm
November-0.3 °C10.1 °C69.85 mm
December-5.7 °C3 °C54.61 mm
Annual4.8 °C16.3 °C990.85 mm

Climate Data for Gilman Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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